ColorPalette.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / CommonUI / System / Drawing / Advanced / ColorPalette.cs / 1305376 / ColorPalette.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

 
namespace System.Drawing.Imaging { 
    using System.Runtime.InteropServices;
    using System.Diagnostics; 
    using System;
    using System.Drawing;

    ///  
    /// 
    ///    Defines an array of colors that make up a 
    ///    color palette. 
    /// 
    public sealed class ColorPalette { 
        ///    Note (From VSWhidbey#444618): We don't provide a public constructor for ColorPalette because if we allow
        ///    arbitrary creation of color palettes you could in theroy not only change the color entries, but the size
        ///    of the palette and that is not valid for an image (meaning you cannot change the palette size for an image).
        ///    ColorPalettes are only valid for "indexed" images like GIFs. 

        private int flags; 
        private Color[] entries; 

        ///  
        /// 
        ///    
        ///       Specifies how to interpret the color
        ///       information in the array of colors. 
        ///    
        ///  
        public int Flags 
        {
            get { 
                return flags;
            }
        }
 
        /// 
        ///  
        ///    Specifies an array of  objects. 
        /// 
        public Color[] Entries 
        {
            get {
                return entries;
            } 
        }
 
        internal ColorPalette(int count) { 
            entries = new Color[count];
        } 

        internal ColorPalette() {
            entries = new Color[1];
        } 

        internal void ConvertFromMemory(IntPtr memory) 
        { 
            // Memory layout is:
            //    UINT Flags 
            //    UINT Count
            //    ARGB Entries[size]

            flags = Marshal.ReadInt32(memory); 

            int size; 
 
            size = Marshal.ReadInt32((IntPtr)((long)memory + 4));  // Marshal.SizeOf(size.GetType())
 
            entries = new Color[size];

            for (int i=0; i

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